Artichoke extract as corrosion inhibitor for carbon steel in acid media

The aim of this investigation is to examine the inhibitory effect of artichoke extract toward the corrosion of carbon steel corrosion in 0.5 M sulfuric acid solution. Potentiodynamic polarization and crhonoamperometry techniques were used in this work to evaluate the inhibition efficiency of the proposed inhibitor in acid solution. Also, Tafel method for the kinetic parameters determination

Corrosion inhibition process of carbon steel in hydrochloric a acid by cronox

The aim of this investigation is to examine the inhibitory effect of CRONOX toward the corrosion of carbon steel corrosion in 1M hydrochloric acid solution. Weight loss and potentiodynamic polarization techniques were used in this work to evaluate the inhibition efficiency of the tested inhibitor. Also, Tafel method for determining of the kinetic parameters, scanning electron microscopy, all of them providing complete information about the mode of action of the inhibitors; simultaneously, has been studied, the CRONOX inhibiting efficiency with increasing temperature

Electrochemical oxygen intake/release process over YBaCo2Fe2O7.5 electrodes in aqueous solutions

The present study proves that YBaCo2Fe2O7.5 perovskite has high performance for oxygen storage capacity in aqueous solutions by electrochemical oxidation. This perovskite is a promising candidate for applications requiring efficient oxide ion conductivity or large oxygen storage capacity is. The oxygen intake/release propriety of YBaCo4O7 has been studied by cyclic voltammetry and chronoamperometry in alkaline and neutral aqueous electrolytes

Anodic oxidation of sulphite ions on smooth nickel based layer platinum nanoparticles in alkaline solution

In this paper, nickel based 1 layer platinum nanoparticles electrode (Ni-Pt1layer), prepared by spray-pyrolysis technique, it has been tested in order to obtain a complete characterization for the process of anodic oxidation of sulphite to sulphate in alkaline media. This process was investigated by cyclic voltammetry technique and linear polarization. The present study concerns the preliminary evaluation of electrocatalytic properties for this type of electrode toward the electrochemical oxidation of sulphite

Skeletal nickel based 6 layers platinum nanoparticles electrode with catalytic effect for anodic oxidation of sulphite in alkaline solution

In this paper, anodic oxidation of sulphite ions on skeletal nickel based 6 layers platinum nanoparticles electrode (Nisk – Pt6layers) in aqueous alkaline solution was investigated by cyclic voltammetry and linear polarization. The present research is essential to understand the mechanism of reaction on this electrode. The preliminary results presented in experimental part confirm the high catalytic activity of Nisk – Pt6layers for sulphite electrooxidation process and offer the possibility to use this type of electrodes in alkaline fuel cells

Corrosion studies of copper electrodes in acidic medium in the presence of N,N-dimethylaniline

In this work, the influence of N,N-dimethylaniline (DMA) as inhibition agent for copper corrosion process has been studied. The electrochemical behaviour of DMA on platinum and copper electrodes in acid solutions has been analyzed by cyclic voltammetry. Inhibitory properties of DMA for copper corrosion protection were studied in 0.5 M H2SO4 solutions in the presence of different concentrations of inhibitor 10-6 M and 10-3 M, respectively. The morphology of copper samples obtained in the absence and presence of DMA has been studied by scanning electron microscopy (SEM)

The using bear branch extract as potential corrosion inhibitor for copper in acid media

The paper investigates the corrosion inhibition property of the Bear Branch (Heracleum sphondylium) extract for copper in acid HNO3 solution. Potentiodynamic polarization and chronoamperometry techniques were used in this study in order to evaluate the inhibition efficiency of the proposed corrosion inhibitor in the mentioned solution. The Tafel plot method employed to determine value of the the corrosion current icorr as well as the corrosion rate. For a better simulation of the adsorption process of the extract on the metal surface, an equivalent circuit (EEC) has been modelled by using the data provided from the electrochemical impedance spectroscopy measurements. The possible interactions between the organic natural compounds molecules present in the extract of Heracleum sphondylium, have been evaluated by means of quantum chemical calculations and molecular modelling